You can download a CSV file with up to 6 months of your casino bet history directly from your account.
How to download my casino betting history
Go to Live Feed in the casino lobby or any game.
Select My bets.
Select Show More.
Select Export last 6 months [CSV].
In the prompt, select Download now.
The download option is greyed out
If the download option is greyed out, you've already downloaded your betting history in the last 24 hours. It'll be available again once the period resets.